GB744576A - Production of alkali metal pyrophosphates and triphosphates of low bulk weight - Google Patents

Production of alkali metal pyrophosphates and triphosphates of low bulk weight

Info

Publication number
GB744576A
GB744576A GB34938/53A GB3493853A GB744576A GB 744576 A GB744576 A GB 744576A GB 34938/53 A GB34938/53 A GB 34938/53A GB 3493853 A GB3493853 A GB 3493853A GB 744576 A GB744576 A GB 744576A
Authority
GB
United Kingdom
Prior art keywords
low bulk
bulk weight
alkali metal
triphosphates
production
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB34938/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemische Fabrik Budenhiem KG
Original Assignee
Chemische Fabrik Budenhiem KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chemische Fabrik Budenhiem KG filed Critical Chemische Fabrik Budenhiem KG
Publication of GB744576A publication Critical patent/GB744576A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/42—Pyrophosphates
    • C01B25/425—Pyrophosphates of alkali metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Glanulating (AREA)

Abstract

Alkali metal pyro- and tri-phosphates of low bulk weight are obtained by spraying solutions or melts of dialkali orthophosphates into a hot gas zone so as to produce no friction or local heating which cause sintering and so that the diameter of calcined particles lies between 0.02-0.6 mms. This low bulk weight orthophosphate calcinate is converted into polyphosphate at a temperature between 450 DEG -550 DEG C., again without local heating or friction that might cause agglomeration. The end product is screened without crushing so that the product attains a particle diameter between 0.02-0.6 mms. The introduction of substances which decompose at the temperature of conversion so as to maintain low bulk weight is also mentioned. Specifications 708,138 and 742,623 are referred to.
GB34938/53A 1952-12-15 1953-12-15 Production of alkali metal pyrophosphates and triphosphates of low bulk weight Expired GB744576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE744576X 1952-12-15

Publications (1)

Publication Number Publication Date
GB744576A true GB744576A (en) 1956-02-08

Family

ID=6648161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34938/53A Expired GB744576A (en) 1952-12-15 1953-12-15 Production of alkali metal pyrophosphates and triphosphates of low bulk weight

Country Status (1)

Country Link
GB (1) GB744576A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578239A1 (en) * 1985-03-04 1986-09-05 Occidental Chem Co PROCESS FOR THE PREPARATION OF A HOMOGENEOUS PARTICULATE MIXTURE OF POLYPHOSPHATES
CN114604840A (en) * 2022-03-15 2022-06-10 贵州胜威凯洋化工有限公司 Preparation method of barium pyrophosphate based on barium hydrogen phosphate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578239A1 (en) * 1985-03-04 1986-09-05 Occidental Chem Co PROCESS FOR THE PREPARATION OF A HOMOGENEOUS PARTICULATE MIXTURE OF POLYPHOSPHATES
CN114604840A (en) * 2022-03-15 2022-06-10 贵州胜威凯洋化工有限公司 Preparation method of barium pyrophosphate based on barium hydrogen phosphate

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